The height , in meters, of a ball thrown vertically upwards is modeled by the function , where is the time in seconds after the ball is thrown. Which of the following is the best interpretation of the statement "" in this context?
The ball reached a maximum height of 21.1 meters after 2 seconds.
The ball was at a height of 21.1 meters after 2 seconds.
The ball was thrown from an initial height of 21.1 meters.
The ball was in the air for 21.1 seconds before hitting the ground.
